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Re: [Phys-l] stopping distance

At 01:58 PM 1/5/2007, you wrote:


Many trucks use air brakes rather than asbestos-coated brake drums which
pollute the environment.


"Air" describes the drum or disc actuating medium.
It's the comparable medium to brake fluid.
Asbestos is a very desirable material for brake
surfaces. There ARE some carbon fiber composite
brakes around.



Brian Whatcott Altus OK Eureka!